Transmission control



Aug. 31, 1943. R 2,328,227

TRANSMISSION CONTROL Filed May 25, 1942 3 Sheets-Sheet 1 IVE D/RECT kfizverzi w" fal'mer Orr Aug. 31, 1943. P. ORR

TRANSMISSION CONTROL Filed May 25, 1942 3 Sheets-Sheet .2

Aug. 31, 1943. P. ORR

' TRANSMISSION CONTROL Filed may 25, 1942 3 Sheets-Sheet 3 able floe r Jr re 7 other Objeg't's and features of: this invention will become:apfiarentIfrom the. follow? on mow i.

' m ng;

'mvemmemes lib ienenge spedltian missions and particularly to a. controlmechanism V therefor; ,It is. particularly iadaptablegtomultitransmission able elements.v

aving a plurality of shift;

; "The'principal o iefiemhisxheencionfisjtebroi iide in amultl-speediransmission having three ar y more: shlitable 1 devices an'lipterlockp-mechamam for theshift devices wherein those devices not inuse are defimtelyfllockedagginst m9ve w w fa,' 1v specific lobjecpo fthis inventio n is to provide an interlock mechanism for p. tra'nsmrs- Amore sion; employing three shift railsand a eross shif mem er i h v a mei bathe moy m lat Q he m -sh tmembe i reve ting n w cldental orundesired movement qfanyrar 11ft is anot he r speemcnp'ject or tmf -v ml prqvide an interlock mechanism I01? va rfn1r1ti epeed transmissiqnemploying threeds hiff rails gearsJG and H must move tozether'axial'lybut may rotate independently prone jano'then; Gear w remt b othe r i s m fi bm e i 'h' tiall'y in order to render effec't iveferie 9ftr e gvaigg;

and

m a m a diagram showingtnerxiovefirenfor the; shift, eelment to ob taimt he various gear mlbsindheutralyfl VF 1'12?" 2 15 an" end "elevation1111' section f'the transmlssion taken'sglong a. line corresponding to3'is faifragmeritary side eleyatfenin sectiibn of the cpnt rols for thetransmi seiontaken along Fig. 51s a seetibntakenthrough the pdppets-ferm lons liner-Forms; 3.

4 1- for 'arbrief describtien afipue'q, pewer'is impressed upon adrivesha'ft" I 9 ms agnengine cr qther source ofipower (riot Sho nowmchf1 secured-a drive gear H. saiq gear H is in constant mesh with" a;gear 12 mount.

tfiie control r'nechanism-ot Fig: 3; t be section being I 3 M'ovement1141s providelt with rvinternala splines 21 which,

wnen said gearfliism thernositibni shown; mesh with external splines 22\on-countershaft-f 13*.

Gear 15: is provided on one side with internal clutchrte'ethla whicharezadaptedto' be' engaged v ebyexternal clutch teeth 24 on gear 16whensaidgear I 8' is moved to theleftKFrg. 1); g

Ln constant meshwith gears 14- and i5; are gears 25 and 26respective1y;which {are freely eri ear r iand; wine, right to enga emten teeth -911; gear 25,-; siln llarly clg tph devi ee 311's prb- 1vided wi th external teeth 31 and 38 wh1eh.are

engegeable withm'emar'teem 3Q and ID respcl l gtp the left r rightermtjfiefpositioqshown. Eg ch qfsaid-eollars 33 anddllisof eou'rse driv'I'Iie ratios @wmame intn friahsenssien we;

described are" as follows Neutral! is obtained by positibri ing new flsh ninm'gi 1. r r

that; theuhtemm teec-hgzr on gear 11- en age exterm teeth 22orr'countershaft'l't, The driveis then from drive shaft Wand drive gearI! to gear l2, e'oiuntershaft l3; teeth 22 and 2 g ar ngear 28 andclutclci device 32 to driven; sheik 2]. {i

Fbrphe'next higherspeed geare i sand H reterlock therefore is a 3, v Napogee? u in neutralf 1! tha -transmission shouldjbe out 'ofi neutraltoward reverse at tlie" sam'e v lineman-5: m third-'tped-gm directli'I'his-of course wouldrbe disastrous and aniadditional-inprovided totalceicarerof such 7 acontingency. I e

"B'Ihe ddmo 1 i aflaga ma sate n. V cross-rail:|.3:and*reversecylindrical; attachment. 68: It is comprised .ot a bea'rizjlilridingain"an opening )3 in housing (and adaptedttog coop-- 'erate with a grooved.and ainotch 105 1 Groove,

. Nik -is] Iocatedlinshiftraillfilin a position such that it will bealigned with bean l02 when shift lever'lZ engages notch 1| andnotchMlis'so located in control member '68 thatbean l02 will fall in notchI05 when shift rail is in neutral position. Thusif lever "and itsassociated cross shift rail-13are in any; position other than that inwhich rail 58 maybe operated, bean I02 will fall into notch I05 and'willprevent movement of rail 58;

fact that plungerlllfl is ineffective at that, time to'prevent a shiftof rail 58 out of neutral No similar interlock is required with respectto rail 53, since as has; been pointed out above, rail 58 cannot bemoved until rail 49 is moved to. the first speed position and when rail49 is so moved interlock plunger immediately becomes effec tive toprevent rail 53 frommoving. A look between rails 49 and 58in the firstspeed position of 49 is prevented by anad ditional notch I06 in rail 49.i

"Thus it will e damaged with thecombination of interlock describedaboveonly one rail can be moved at any one time and the oper- Itisunderstood that the foregoing description is merelyillustrative ofapreferred embodiment of the invention andthat the scope of theinvention therefore shouldvnot bedetermined thereby but shouldbedetermined instead by'the append- I claim:

.1. In a torque transmitting mechanism having a plurality of 'shiftahleelements, means forefiecting a mutually exclusive operation of saidelements comprising a shifter for engaging said elements, means formoving the shifter across the elements to select one element, interlockmeans between adjacent elements and additional interlockmeans betweenone elementand the shifter.

2. In a torque transmitting mechanism having a plurality of shiftableelements, said elements being shiftable longitudinally along par allellines, means for effecting a mutually exelusive operation of saidelements comprising a shifter for engaging and moving said elements,means for moving the shifter across the elements to select one element,interlock means between adjacent elements and additional V means betweenoneelement and the shifter.

3. In a torque transmitting mechanism having a plurality of shiftableelementscomprising a first element for shifting into either one of tworatios, at second element for shifting into either" one of two otherratios, and a third element for shifting into reverse,means foreffecting a mutually, exclusive operation of said elements comprising ashifter for engaging and operating said elements, means for moving theshifter across the elements to select one element, interlock meansbetween the first and second eleinterlock This effectively locks rail 58against movement when rail 53-is operated, despite the m et tween the mnrsa seeond; amt third shiftabl'ei elements,-

mearis torzeflecting a; mutually exclusive oper atiori ot sa'ideIementacomprisinga shifterr for. fen'gaging saidelements, means formovingthe shifter: across' the elementsrto select oneelement, interlockme'ans betweenxtheflrsti and second elei-i menta and betwen the' secondithird, 'ele-.

between;

ments. and additional. interlocks means. the thixd el'ementthe-shifter;-

to selectone element, interlock means ,between the first andsecondelements and additional interlock means between the third elementand V 1 the shifter; V a 1 6. In a torque transmittingmechanism havingfirst, second and thirdjshiftable elements,

means for effecting a mutually exclusive operi ation of said elementscomprising a shifter for engaging said elements, means for moving theshifteracross the elements to select, one element, interlockmeans-between the firstand seei 10nd elements effective to lock one ofthe elements 7 when the other is shifted, means'for preventing ation ofthe one rail automatically prevents the remaining rails from moving.

a shift of the third element until the second element has been shifted,interlock means between the second and third elements effective whensaid second elementis shifted to another position and interlock meansbetween the third element and the shifter such that thethirdelement islocked against movement whenever the w first or second element isshifted.

'1. In a torque transmitting mechanism have n f ing first, second andthird shiftable elements,

tion of said elements comprisinga 'shifter for engaging said elements;means for moving the means for effecting amutuallyf exclusiveoperashifter acrossthe elements to select one element,

interlock means between the first and secondelements and an additionalinterlock meansJ between the thirdjeleinent and the -shifter.

8. Inaftorque transmittingmechanism' having first,,fs econd and thirdshiftable elements,

, -ashifter fOr engaging and operating saidelements,means'. for movingthe shifter across the elementsto select one element, an interlockbetween the first 'and second elements preventingnmovement of one ofsaid element whenjthe other has been moved from a predeterminedposition, an interlock between the second and third elements, saidinterlock permitting the,

third element to be moved from a predetermined position when thesecond-element assumes either one of two predetermined.positions, and anadditional interlock for preventing movement of the third shiftableelement when the shifter engages the second element.

9. In atorque transmitting mechanismhaving first, second and thirdshiftable elements, a

, shifter for engaging and operating said .ele-

ments, means for moving the shifter" acrossthe elements to select oneelement, an interlock between the first and second elements preventingmovement of one of said elements when the an: interlock meansfl bev'erseelenm 't' and-athe shifterl j "4-1 In a torque ti ansmittingmechanism:hav-

oneof two predetermined positions, and anadditional; interlock which is,efiective to prevent movement of the third element when the shifterengages either the firstuortseoond element. I

1 0. ,In, a torque transmitting mechanism a plurality .of shiftableelements; a shifter for engaging the elements rneans, for 1noving, the.shifter across the elements to select one element, bean-type interlockscooperating with adjacent across the additional element.

elements to hold one element against movement 7 when the adjacentelement istmoved, and a bean- I type; interlockbetween the shiftermoving means. and another elementto hold said last-mentioned element;against. movement, when any of the other elementszis moved. i 1

11. A torque transmitting mechanism as dee scribed .inclaim 10-, saidshiftable elements being movable parallel to one anothenand said meansfor moving the shiftera'cross the elements comprising a' rod slidableaxially and extending YPALME 303R;

